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First we have to figure out which species is oxidized and which is reduced and balance it in acid solution. On the left side, Ag has an oxidation number of 0 (it is an uncombined element). On the right side, Ag is +1. Why? Ag = +1 + 2CN- = -2 ----------------------------- Ag(CN) ion charge = -1 Note that oxygen on the left side also has an oxidation number of 0 for the same reason as Ag. But on the right side of the equation, it has formed H2O and has a charge of -2. CN- is really a spectator ion (isn't oxidized or reduced) so we can ignore it for now. Let's balance each half-reaction. I'm using = as an arrow sign. Oxidation: Ag = Ag+ + e- (done) Reduction: O2 = H2O Put a 2 in front of H2O O2 = 2H2O to balance oxygen Put 4H+ on the left side O2 + 4H+ = 2H2O to balance hydrogen Put 4e- on the left to O2 + 4H+ + 4e- = 2H2O To add the oxidation and reduction reactions together, I need to multiply the oxidation reaction by 4 so its electrons will cancel with the four that are in the reduction reaction. Doing that you get 4Ag + O2 + 4H+ = 4Ag+ + 2H2O In alkaline solution, you find the H+ above and add an equal number of OH- to BOTH sides of the equation: The 4H+ + 4OH- give 4 H2O. 4Ag + O2 + 4H+ = 4Ag+ + 2H2O +4OH- + 4OH- --------------------------------------... 4H2O If I delete two H2O from each side I get: 4Ag + O2 + 2H2O = 4Ag+ + 4OH- Finally, I can add 2CN- to each side for this: 4Ag + O2 + 2H2O + 8CN- = 4Ag(CN)- + 4OH-
What else can I help you with?
What is the product for PbO2 plus O2?
The product for the reaction between PbO2 and O2 is PbO2.
Is this a synthesis reaction single displacement reaction decomposition reaction or double displacement reaction KNO3-KNO2 plus O2?
This is a decomposition reaction. KNO3 decomposes into KNO2 and O2 when heated.
Is 4Li plus O2 equals 2Li2O a redox reaction?
yes
What is the chemical reaction for this equation C3H8 plus 5 O2 3 CO2 plus 4 H20 plus energy?
This is the chemical reaction for burning of propane.
What is the oxidation half reaction for 2mg plus o2 equals 2mgo?
Mg equals Mg2+ plus 2e-
What is the balanced equation for silver chlorine silver chloride?
Silver oxide --> silver and (+) oxygenAg2O --> Ag2 + O2BALANCED =2Ag2O --> 2Ag2 + O2
What type of reaction is 2H2 plus O2 equals 2H2?
decomposition reaction
What is the product for PbO2 plus O2?
The product for the reaction between PbO2 and O2 is PbO2.
What kind of reaction is N2 plus O2 plus Heat 2NO?
endothermic
What would you like what type of reactions is 4 Ag plus O2 arrow 2 Ag2O?
2HgO --> 2Hg + O2 is a decomposition reaction, in which Mercury oxide is decomposed into the element mercury and oxygen gas. A decomposition reaction is one in which a more complex substance is broken down into its simpler components.
Is this a synthesis reaction single displacement reaction decomposition reaction or double displacement reaction KNO3-KNO2 plus O2?
This is a decomposition reaction. KNO3 decomposes into KNO2 and O2 when heated.
F2 plus H2O yields HF plus O2?
The balanced chemical equation for the reaction is: 2F2 + 2H2O -> 4HF + O2 This reaction produces hydrogen fluoride (HF) and oxygen (O2) from the combination of fluorine (F2) and water (H2O).
What type of reaction is NH3 plus O2 - NO plus H2O?
This is an oxidation reaction of N from -3 (in NH3) to +2 (in NO) oxidation value. 4 NH3 + 5 O2 --> 6 H2O + 4 NO
Is 4Li plus O2 equals 2Li2O a redox reaction?
yes
What is the chemical reaction for this equation C3H8 plus 5 O2 3 CO2 plus 4 H20 plus energy?
This is the chemical reaction for burning of propane.
What type of chemical reaction is c5h12 plus o2 equals co2 plus h2o?
The combustion reaction of heptane is:C7H16 + 11 O2 = 7 CO2 + 8 H2O
Is CO2 plus H2O arrow C6H12O6 plus O2 an anabolic reaction?
Yes, this photosynthesis is an anabolic reaction, an energy consuming (sunlight), building-up reaction.
